Thru-Glass Mounted Support Bars Glass-to-Glass Bar creates a means of support that strengthens an enclosure's structural integrity. It may be used in place of a header in certain applications (call for details) and can be mounted to a wall, ceiling or glass-to-glass. You cut them to fit your exact needs and re-attach fittings. Supplied Bar is 39" (1 m) long, requires a 5/8" (16 mm) hole in the glass, and comes in finishes to match our Hinges and Pull Handles. All mounting hardware included.